and the P-3 still flies today. In 1957, the U.S. Navy solicited bids to replace the piston-engined Lockheed P-2 Neptune and the Martin P-5 Marlin, two outdated maritime patrol and antisubmarine ...

During the 1950s and 60s the Lockheed Neptunes were employed by RAAF ... evolutionary step between the Lincoln bombers and the P-3B Orions that eventually succeeded the Neptunes in the late ...

The P-3 Orion is a military version of the Lockheed Electra C passenger 4-engined turboprop aircraft Argentina's Defense Ministry agreed to purchase four long-range Lockheed Martin P-3 Orion ...